基于半刚性对映配体的螺旋单一手性配位聚合物

吉林大学学报(理学版) ›› 2021, Vol. 59 ›› Issue (2): 415-420.

基于半刚性对映配体的螺旋单一手性配位聚合物

徐中轩, 陈雪婷，徐仕菲，胡邦平

遵义师范学院化学化工学院，贵州遵义 563002

收稿日期:2020-08-12 出版日期:2021-03-26 发布日期:2021-03-26
通讯作者: 徐中轩 E-mail:xuzhongxuan4201@163.com

Homochiral Coordination Polymers Based on Semirigid Enantiomers

XU Zhongxuan， CHEN Xueting， XU Shifei， HU Bangping

School of Chemistry and Chemical Engineering， Zunyi Normal College， Zunyi 563002， Guizhou Province， China

Received:2020-08-12 Online:2021-03-26 Published:2021-03-26

摘要/Abstract

摘要： 在辅助配体3-(2-甲基-1H-咪唑-1-基)-5-(5-甲基-1H-咪唑-1-基)吡啶(MIMIP)的辅助下，乳酸衍生物(R)-4-(1-羧基乙氧基)苯甲酸((R)-H₂CBA)和(S)-4-(1-羧基乙氧基)苯甲酸((S)-H₂CBA)分别与Cd(Ⅱ)通过溶剂热反应得到一对结构新颖的单一手性配位聚合物-[Cd((R)-CBA)(MIMIP)\]·H₂O (1-R)和[Cd((S)-CBA)(MIMIP)]·H₂O (1-S), 并测试两个配合物的粉末衍射光谱、热稳定性、紫外-可见吸收光谱和荧光性质. 结果表明： 1-R和1-S均结晶于单斜的P2₁2₁2₁空间群，具有三维超分子框架的对映体；在1-R中， (R)-CBA^2-和MIMIP分别与Cd(Ⅱ)沿b轴形成两种右手螺旋链，在1-S中， (S)-CBA^2-和MIMIP与Cd(Ⅱ)形成对映的左手螺旋链； (R)-CBA^2-和MIMIP与Cd(Ⅱ)在1-R中形成左手螺旋链，(R)-CBA^2-和MIMIP与Cd(Ⅱ)在1-S中形成对映的右手螺旋链.

关键词: 手性配位聚合物; , 对映体; , 螺旋链; , 超分子框架, 乳酸衍生物

Abstract: With the help of auxiliary N-donor ligand 3-(2-methyl-1H-imidazol-1-yl)-5-(5-methyl-1H-imidazo-1-yl)pyridine (MIMIP)， a pair of novel homochiral coordination polymers (HCPs) [Cd((R)-CBA)(MIMIP)]·H₂O (1-R) and [Cd((S)-CBA)(MIMIP)\]·H₂O (1-S) were synthesized by solvothermal reaction of lactic derivatives (R)-4-(1-carboxyethoxy) benzoic acid ((R)-H₂CBA) and (S)-4-(1-carboxyethoxy)benzoic acid ((S)-H₂CBA) with Cd(Ⅱ) ions, and the powder X-ray diffraction (PXRD), thermostability, UV-Vis absorption spectra and photoluminescent properties of two complexes were tested. The results show that both 1-R and 1-S crystallized in the monoclinic P2₁2₁2₁ space group and have 3D supramolecular framework enantiomers. In complex 1-R， (R)-CBA^2- and MIMIP are linked by Cd(Ⅱ) ions to form two kinds of right-handed helical chains along b-axis， respectively， the enantiomeric left-handed helical chains exists in complex 1-S. (R)/(S)\|CBA^2- and MIMIP are linked by Cd(Ⅱ) ions to form the third helix in complexes 1-R and 1-S along b-axis.

Key words: chiral coordination polymers; , enantiomer; , helical chain; , supramolecular framework, lactic derivative

中图分类号:

O614.24

徐中轩, 陈雪婷, 徐仕菲, 胡邦平. 基于半刚性对映配体的螺旋单一手性配位聚合物[J]. 吉林大学学报(理学版), 2021, 59(2): 415-420.

XU Zhongxuan, CHEN Xueting, XU Shifei, HU Bangping. Homochiral Coordination Polymers Based on Semirigid Enantiomers[J]. Journal of Jilin University Science Edition, 2021, 59(2): 415-420.